scholarly journals Effect of Nitrogen Application and Leaf Removal on the Metabolism of Carbohydrate in Leaves and Stems of Rice Plants at Ripening Stage.

1998 ◽  
Vol 67 (1) ◽  
pp. 94-100 ◽  
Author(s):  
Mitsugu HIRANO ◽  
Yuko HOSAKA ◽  
Mihoko SUGIYAMA ◽  
Eiki KURODA ◽  
Takao MURATA
Keyword(s):  
Leaf Removal ◽  
Nitrogen Application ◽  
Ripening Stage ◽  
Rice Plants

scholarly journals Effect of Nitrogen Application on Ultrastructure of the Chloroplasts in Rice Plants

1977 ◽  
Vol 46 (3) ◽  
pp. 387-392 ◽  
Author(s):  
Nobuo CHONAN ◽  
Harunosuke KAWAHARA ◽  
Toshiaki MATSUDA
Keyword(s):  
Nitrogen Application ◽  
Rice Plants

scholarly journals Photosynthetic enhancement, lifespan extension, and leaf area enlargement in flag leaves increased the yield of transgenic rice plants overproducing Rubisco under sufficient N fertilization

2021 ◽  
Author(s):  
Marin Tanaka ◽  
Mamoru Keira ◽  
Dong-Kyung Yoon ◽  
Tadahiko Mae ◽  
Hiroyuki Ishida ◽  
...  
Keyword(s):  
Leaf Area ◽  
Transgenic Rice ◽  
Photosynthetic Capacity ◽  
N Fertilization ◽  
Ripening Stage ◽  
Wild Type ◽  
Flag Leaves ◽  
Grain Yields ◽  
Rice Plants ◽  
Early Ripening

Abstract Background: Improvement in photosynthesis is one of the most promising approaches to increase grain yields in crop plants. In our previous research using an isolated experimental paddy field, transgenic rice plants overproducing Rubisco by 30% (RBCS-sense rice plants) showed up to 28% increase in grain yields under sufficient nitrogen (N) fertilization. Furthermore, the plant N contents above-ground sections and Rubisco contents of the flag leaves were higher in the RBCS-sense rice plants than the wild-type rice plants during the ripening period, which may be reasons for the increased yields.Result: In this research, the photosynthetic capacity and canopy architecture were analyzed to explore factors for the increased yields of RBCS-sense rice plants. It was found that N had already been preferentially distributed into the flag leaves at the early ripening stage, contributing to maintaining higher Rubisco content levels in the enlarged flag leaves and extending the lifespan of the flag leaves of RBCS-sense rice plants throughout ripening periods under sufficient N fertilization. The higher amounts of Rubisco also improved the photosynthetic activity in the flag leaves throughout the ripening period. Although the enlarged flag leaves of the RBCS-sense rice plants occupied large spatial areas of the uppermost layer in the canopy, no significant prevention of light penetration to leaves below the flag leaves was observed. Additionally, since the CO2 assimilation rates of lower leaves between wild-type and RBCS-sense rice plants were the same at the early ripening stage, the lower leaves did not contribute to an increase in yields between the two genotypes.Conclusion: It was concluded that improvements in the photosynthetic capacity by higher leaf N and Rubisco contents, enlarged the leaf area, and extended the lifespan of flag leaves, causing an increase in grain yields of RBCS-sense rice plants grown under sufficient N fertilization.

scholarly journals Impacts of lower‐leaf removal timing, number, and nitrogen application to flue‐cured tobacco

cftm ◽  
2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Camden E. Finch ◽  
Matthew C. Vann ◽  
Randy Wells ◽  
Loren R. Fisher ◽  
A. Blake Brown
Keyword(s):  
Leaf Removal ◽  
Nitrogen Application

scholarly journals Lower‐Leaf Removal and Nitrogen Application Programs for Flue‐Cured Tobacco Production

2019 ◽  
Vol 111 (4) ◽  
pp. 1933-1939 ◽  
Author(s):  
Camden E. Finch ◽  
Matthew C. Vann ◽  
Loren R. Fisher ◽  
Randy Wells ◽  
A. Blake Brown
Keyword(s):  
Leaf Removal ◽  
Nitrogen Application ◽  
Tobacco Production ◽  
Application Programs
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